Temperature sensing behavior of Tm3+:1G4（a）,1G4（b） in oxyfluoride glass ceramics containing BaYbxY1-xF5 nanocrystals
来源期刊：JOURNAL OF RARE EARTHS2020年第4期
论文作者：Rui Zhu Ke Zhang Congcong Zhu Zhencai Li Qiuhong Min Dacheng Zhou Jianbei Qiu
文章页码：356 - 361
摘 要：Tm3+-doped transparent oxyfluoride glass ceramics containing BaYbxY（（1-x））F5 nanocrystals were prepared via high temperature solid phase melting method,of which up-conversion emission is achieved by the Yb3+-mediated energy transfer process.The required photon number of Tm3+ions emissions in BaYbxY（1-x）F5 nanocrystals was calculated through the luminescence spectra,revealing the strong dependence of energy transfer mechanism on Yb3+ions concentration.Meanwhile,based on the fluore scence intensity ratio technology,the effect of different energy transfer mechanism on the temperature sensitivity was investigated by the temperature-dependent luminescence intensity of thermally coupled energy levels of Tm3+:1G4（a）,1G4（b）.The obtained sensitivity decreases with the increase of Yb3+ions content,which is mainly attributed to the changes in photon absorption process of Tm3+:1G4（b）.
Rui Zhu，Ke Zhang，Congcong Zhu，Zhencai Li，Qiuhong Min，Dacheng Zhou，Jianbei Qiu
College of Materials Science and Engineering, Kunming University of Science and Technology
摘 要：Tm3+-doped transparent oxyfluoride glass ceramics containing BaYbxY（（1-x））F5 nanocrystals were prepared via high temperature solid phase melting method,of which up-conversion emission is achieved by the Yb3+-mediated energy transfer process.The required photon number of Tm3+ions emissions in BaYbxY（1-x）F5 nanocrystals was calculated through the luminescence spectra,revealing the strong dependence of energy transfer mechanism on Yb3+ions concentration.Meanwhile,based on the fluore scence intensity ratio technology,the effect of different energy transfer mechanism on the temperature sensitivity was investigated by the temperature-dependent luminescence intensity of thermally coupled energy levels of Tm3+:1G4（a）,1G4（b）.The obtained sensitivity decreases with the increase of Yb3+ions content,which is mainly attributed to the changes in photon absorption process of Tm3+:1G4（b）.
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